1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.servlet;
24  
25  import com.liferay.portal.kernel.cache.MultiVMPool;
26  import com.liferay.portal.kernel.cache.PortalCache;
27  import com.liferay.portal.kernel.servlet.ImageServletToken;
28  import com.liferay.portal.kernel.util.StringPool;
29  import com.liferay.portal.servlet.filters.cache.CacheUtil;
30  import com.liferay.portlet.journalcontent.util.JournalContentUtil;
31  
32  /**
33   * <a href="ImageServletTokenImpl.java.html"><b><i>View Source</i></b></a>
34   *
35   * @author Brian Wing Shun Chan
36   */
37  public class ImageServletTokenImpl implements ImageServletToken {
38  
39      public static final String CACHE_NAME = ImageServletToken.class.getName();
40  
41      public void afterPropertiesSet() {
42          _cache = _multiVMPool.getCache(CACHE_NAME);
43      }
44  
45      public String getToken(long imageId) {
46          String key = _encodeKey(imageId);
47  
48          String token = (String)_multiVMPool.get(_cache, key);
49  
50          if (token == null) {
51              token = _createToken(imageId);
52  
53              _multiVMPool.put(_cache, key, token);
54          }
55  
56          return token;
57      }
58  
59      public void resetToken(long imageId) {
60          String key = _encodeKey(imageId);
61  
62          _cache.remove(key);
63  
64          // Journal content
65  
66          JournalContentUtil.clearCache();
67  
68          // Layout cache
69  
70          CacheUtil.clearCache();
71      }
72  
73      public void setMultiVMPool(MultiVMPool multiVMPool) {
74          _multiVMPool = multiVMPool;
75      }
76  
77      private String _createToken(long imageId) {
78          return String.valueOf(System.currentTimeMillis());
79      }
80  
81      private String _encodeKey(long imageId) {
82          StringBuilder sb = new StringBuilder();
83  
84          sb.append(CACHE_NAME);
85          sb.append(StringPool.POUND);
86          sb.append(imageId);
87  
88          return sb.toString();
89      }
90  
91      private MultiVMPool _multiVMPool;
92      private PortalCache _cache;
93  
94  }